1.) a.) If 1 km = 1,000 m and 1 m = 1,000 mm, Convert 2.0 x 10⁶ mm into the equivalent value in km.

b.) There are 1,760 yards in a mile and 0.621 miles in 1 km. If you sprinted the equivalent of 20 football fields (each 100 yrds long), how many miles did you sprint?

c.) If there are 1.609 km in a mile, convert 135 miles/hour into meters per second. (There are 1000 m in a kilometer.)

Newton's law of cooling states that the rate of change in the temperature t(t) of a body is proportional to the difference between the temperature of the medium m(t) and the temperature of the body. that is, startfraction dt over dt endfraction equals upper k left bracket upper m left parenthesis t right parenthesis minus upper t left parenthesis t right parenthesis right bracket , where k is a constant. let kequals0.04 left parenthesis min right parenthesis superscript negative 1 and the temperature of the medium be constant, m(t) font size decreased by 3 equivalent font size decreased by 3 294 kelvins. if the body is initially at 369 kelvins, use euler's method with hequals0.1 min to approximate the temperature of the body after (a) 30 minutes and (b) 60 minutes.

The amount of heat required to change liquid water to vapor at its boiling temperature is 2256 kj/kg. the amount of heat required to change liquid mercury to its vapor state at its boiling temperature is 295 kj/kg. one kg of each substance is currently at its boiling point. how will the amount of thermal energy required to change each substance from a liquid to a gas differ?

Explain how the absorption of sound waves differs from the transmission of sound waves.